/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package servlets;

import MiniProjet.gestionnaires.GestionnairePanier;
import MiniProjet.modeles.LigneCommande;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author SaLaH
 */
@WebServlet(name="ServletUpdatePanier", urlPatterns={"/ServletUpdatePanier"})
public class ServletUpdatePanier extends HttpServlet {
   
    public static final String DELETE_LINE_ITEM = "DELETE_LINE_ITEM";
    public static final String UPDATE_LINE_ITEM = "UPDATE_LINE_ITEM";
    public static final String LINE_ITEM_ID = "LINE_ITEM_ID";
    public static final String QUANTITY_ERROR = "Veuillez saisir la quantité.";
    public static final String TYPE_ERROR = "Champ invalide";
    public static final String REMAIN_QUANTITY_ERROR = "Quantité supperieure au stock";
    public static final String ZERO_QUANTITY_ERROR = "La quantité est invalide";
    private GestionnairePanier gestionnairePanier;

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        gestionnairePanier = (GestionnairePanier) request.getSession(true).getAttribute("MyStatefullCartProcessBean");
        boolean isUpdateAction =  request.getParameter("actionUpdate") != null ;
        boolean isDeleteAction =  request.getParameter("id") != null ;

     
        String ligneId = request.getParameter("id");
      

        Integer quantity = null;
     
if(isDeleteAction){
     Long id = Long.valueOf(ligneId);
     gestionnairePanier.deleteligneCommande(id);
}else
       if (isUpdateAction) {
            for (Iterator it = gestionnairePanier.getligneCommandeList().iterator(); it.hasNext();) {
                LigneCommande lineItem = (LigneCommande) it.next();
                String itemLineIdStr = String.valueOf(lineItem.getId());

                String quantityStr = request.getParameter(itemLineIdStr);
                try {
                    quantity = Integer.valueOf(quantityStr);
                    if(quantity <= 0){
                     request.setAttribute("remainQuantityError", ZERO_QUANTITY_ERROR);
                    }else if (quantity <= lineItem.getFilm().getQuantite()) {
                        gestionnairePanier.updateligneCommande(lineItem, quantity);
                    } else {
                        request.setAttribute("remainQuantityError", REMAIN_QUANTITY_ERROR);
                    }
                } catch (Exception e) {
                    request.setAttribute("typeError", TYPE_ERROR);
                }
            }
        }

        request.setAttribute("total", gestionnairePanier.getTotalPriceLineItemList());

        RequestDispatcher dp;
        dp = request.getRequestDispatcher("panier.jsp");
        dp.forward(request, response);
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
